Heyman rosenberg



H. ROSENBERG.

LOCK AND INDICATOR FOR DAMPEHS.

APPLICATION 'min FEB. l5. 191s.

Patented Dee. 9, 1919.

LWP

51mm 11 Tot To all 'whom t may concern.'

HEYMAN ROSENBEBG, 01E'l NEW YORK, Y.

I `IIIOGK .AND INDITOR vF018. DAMPERS.

Application led February'r 15, 19.18. Serial No. 217,382.

Be it lmown that I, HEYMAN RosnNBERGV -a citizen of the'UnitedStates, residing at New York, in the county of New York and State of New York, have invented certain new and. useful Improvements in Locks and Indicators for Dampers; and I do hereby declare the following to be a full, clear, and exact description bf the invention, such as will enable others-skilled in the art to which it appertains to make and use the same.

` The present invention relates to dampers for controlling the passagel of air and gases through pipes and ducts, and has moreparticular reference to an im I'oved means for regulating the position o the damper and for securing it when adjusted.

The object of the invention is to provide a lock and indicator for'attachment to dampers which are relatively simple in construction and inexpensive -to manufacture, and which are provided with means for. determining certain portions of the damper relative'to'the enclency of the ventilating or (lleating system in which the damper isv use "l There are a large number of damper 'adj justment devicesvvhich turn 'the 'dampers' and, hold them in position, but they 1ack the features of vdetermimng various positions of the damper for obtaining the desired eiil ciency.`inthe heating or heat ventilatingsystem to which'the damper `-is applied. A damper in these'systems is one of the imost important adjuncts Y as it. regulates the changing ofv temperature "in rooms, schools, churches, auditoriums and residences, and' also regulates the amount and discharge' of foul air and gases.' In these systems the engineer must exercise considerable skill in properly adjusting the dampers and in the adjustment and control vof the sameduring use. It .is found necessary to adjust Ithe dalnperss in a certain position relative to the system installed for obtaining the desired results in the operation of steam boiler's for the economy inthe consumption of coal and -in eliminating escape of asphyxiating gases from the system which have caused many deaths. The damper locks and indicators heretofore constructed have beenl found crude and unreliable for -rcgulating the dampeis to the vdegree ofu inenessre'- quired for eiiciently operating the ventilat# ngand heating sstems.

t -1s another `o ject' of. thisY invention:

Specication'of Letters Patent.

Patented Dec. 9, 1919.

therefore to provide ay device for adjusting andholding a damper in' the correct position, and to enable the operator to-determine thecorrect position after a definite adjustment has been found. Y 4

With these and further objects in -view as will in part hereinafter becomevapparent and in part be stated, the invention com-1 prises certain novel constructions, combinations and arrangements of parts as subse quently specilied and claimed. In the accompanying drawings,- Figure 1 is a-front elevation of a damper apparatus constructed according to the present invention and as applied to a stove pipe or the like'.

Fig. 2 isr a. vertical sectional view taken 'i l through the same. Fig. 3 is av detail perspective operating and retaining lever.

Fig. 4 is a detail, perspective view 'ofa view of the modified form of locking'means forthe acljusting lever. f

Referring to the drawings by numerals, 10 designates a pipe or duct through which air or gases are adapted toi-low, the passage through the pipe 10xbeing controlled by`a damper Yplate 11` mounted u pon a damper rod or shaft 12,`th`e latter projecting through the'side' of the pipe l0 and being preferably non-circular in cross section.

The quadrant plate 13 is of sheet metal,

lcircular in formand stamped to provide opposed 'outstanding ears 14:- for the reception of sheetmetal screws 15, or the like,

for holding the plate 13 against the outer to form at its central portion a raised 'circular boss or bearing 16. having a flat outer face suitably apertured to receive the outer of theplate 13 the ylatter is p'rovlded with Ian outwardlyfpressed annular boss or ring 17 concentric tothe boss 16 and having a circular walls producing an annular groovelike passage therebetween, The-ring 17 is' provldedinits outer faceand atone side of. the -plate 13 with an' arcuate slot 18 ex tending through substantilly'ninety dees andathrough 'which projects a-clampigli; lbolt 19. The head 'of the housedv withinthe passageway between the face of the pipe 10. The plate 13 is stamped end of thedamper rod '12' therethrough and being circular i-'n contour to admit free turn-v ing of the rod..v Near'the outer edge portion,

I'id

bolt 19 is A walls of ring 17, and a winged nut 20 is threaded on the outer end oit' the bolt 19.

A lever or handle 21, which is preferably stamped frein sheet metal, is provided at one end with a non-circular opening 22 therethroug.` adapted to it over the noncircular outer end of the damper rod 12. Preferably, the lever 21 is arranged upon the rod 12 in such-position that the longitudinal axis coincides with the plane of the damper plate 11 so that the position of the lever 21 exteriorly upon the pipe 10 determines the position of the damper plate 11 within the pipe. The end of lever 21, having aperture 22 will, for convenience, be referred to as the inner end, and is provided with a projection 23 which may be` formed integral with the handle 21 and which forms a pointer of suticient length to traverse the outer :tace oi the ring 17 diametrically opposite to the arcuate slot 18'. The ring 17 has on its outer flat Vface and diametrically opposite the slot 18 a -row of radial graduations 24 which may be suitably identiiied by numbers or the like as shown for determining the various positions of adjustment of the damper plate 11 whenv the handle 21 is moved and the pointer A23 traverses the graduations. The

Yscale of graduations 24 extends through substantially ninety degrees, and the boss 17 may be provided on its outer face with suit- 'able indicia designating the extreme open and closed posit-ions of the damper.

The lever 21 is adapted to be secured in position when adjusted according to the position of the pointer 23 upon the scale of graduations 24, andor this purpose the lever 21 is provided intermediate its ends with a second opening 25 through which the bolt 19 is adapted to project. The binding nut 20 on theouter end of the bolt is adapted to urge the handle 21 into intimate contact with the boss 17 to frictionally retain the handle from movement.`

In Fig. 1 the parts are shown as adjusted and clamped in a position, as indicated upon.

the scale 24, `or holding the damper plate 1l half open.' Under certain conditions, de-V pendentl upon the installation of the heating or ventlla system, it is found that certain results are obtained by the adjustment ofthe` damper plate into one-quarter, one-eighth,

and other minutely vadjusted positions.

- These positions -of adjustment cannot be accurately. obtained by use of the damper quadrants at Ypresent in use, with the resultl f that each person who controls the damper must necessarily experiment with the same and use the damper in various positions until the desired results are obtained. Defects m the heating or Ventilating system, aside from the adjustment of the damper, have to be taken into consideration, and frequently cannot be vascertained or located when the normally required adjustment of inaaeae the damper is not known. 1t is for these reasons that it is found necessary in the installation of these systems, and for obtaining the maximum eliiciency of the same, for securing the desired results of heating and Vventilating, that a means be provided for provided with an aperture 26 through which a tag or the like may be secured for identifying the particular duct or pipe with the part of the building to which the pipe leads. 'l his is for the purpose of contra-distinguishing a number of the dampers from each other where the system includes a plurality of pipes or tlues.'

Une means for locking the damper in adjusted position, so that unauthorized persons cannot change the adjustment of the damper, is shown in Figs. Land 2 wherein one of the wings 27 of the clamping nut is provided with an aperture therethrough adapted to register with la corresponding opening formed in a pivoted lug 28, the latter having a shank 29 which is riveted or otherwise pivotally secured through the handle 21 near the nut 20. The lug 28 is adapted to be swung upon its shank 29 into overlapping relation with respect to' the wing 27 of the binding nut after the latter has been properly adjusted. The shackle 30 of a pad-lock, or the like, is adapted to be placed through the openings in the wing 27 and the lug 28 for locking the parts together and preventing release' of the handle 21- without first removing the pad-lock.

Another and more simplied means for locking the handle 21 in adjusted position is shown in Fig. 4, wherein the clamping bolt 19 is provided with a substantially cylin drical binding nut 31 having two or more apertures 32 in its outer end adapted to r'eceive the lingers 33 of a key 34. Thenut31 `is thus constructed so that ity cannot be turned to release the handle 21 by means.

the pipe.' .While a damper rod 12 has been illustrated in the drawing, and has lbeen above described, it is, of course, understood that any suitable bearings or other devices may be equally as well employed for supporting the damper and connecting it to the handle 21.

What I claim is 1. In damper apparatus of the kind de scribed, the combination of a plate having a Vcircular boss stamped outwardly therefrom and also having a ring stamped outwardly concentric to the boss and spaced therefrom, the walls of the ring forming a groove-like passageway, -a damper shaft extending through the boss, an operating lever engaging said shaft and extending across said ring, the ring being formed with a slot in its outer face, a. bolt extending through the slot and arranged with its head in the passageway of the ring and of larger dimensions than the width of the slot, the said bolt extending through the lever, and a clamping nut on the bolt at the outer aceof the lever.

2. In damper apparatus of the kind dea circular boss stamped outwardly there i Witnesses: scribed, the combination .of a plate having from andl also having a ring stamped outgroove-like passage-way,the-bossl and rlng Aeach having a fiat outer `face lying in the same plane, a. damper shaft extending through the boss, an operating lever engaging said shaft and extending across said ring, the ring being formed with a slot in its outer face, a bolt extending through the slot and arranged" with its head in the passageway of 'the ring and of larger dimensions than the width of the slot, the said bolt extending through the lever, and a clamping nut on the bolt at the outer face of the lever, the lever having a portion eX- tending beyond the damper shaft and provided with a'pointer overlying the flat face of the ring, and said face of the ring being formed with graduations relative to which-v the pointer is adapted toy be moved with movements of the lever.

In testimony whereof I ax my signature in thepresence of two witnesses.

HEYMAN ROSENBERG.

-VINGENT W. Womsnx, Jr.,

HUBERT Humm. 

